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Polycrystalline resin diamond abrasive and preparation method thereof

A polycrystalline diamond and diamond technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of limited use range, shortened service life, and poor processing quality of diamond abrasives, and achieve lighter color and increased crystal transparency , The effect of improving thermal stability

Active Publication Date: 2021-07-02
郑州益奇超硬材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During high-speed grinding and high-efficiency ultra-precision grinding, it is easy to expand and break prematurely
Reduced grinding efficiency, shortened service life, and poor processing quality
The scope of use of polycrystalline resin diamond abrasives is limited

Method used

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  • Polycrystalline resin diamond abrasive and preparation method thereof
  • Polycrystalline resin diamond abrasive and preparation method thereof
  • Polycrystalline resin diamond abrasive and preparation method thereof

Examples

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preparation example Construction

[0022] A preparation method of polycrystalline resin diamond abrasive, specifically, the uniform mixed powder of polycrystalline diamond abrasive, metal and alloy is synthesized by high temperature and high pressure method, and the metal and alloy account for 5%-16% of the weight of the mixed powder; The metal is at least one of copper, aluminum and zinc, and the alloy is at least one of copper-zinc alloy and copper-aluminum alloy. The polycrystalline diamond abrasive of the present application is a commercially available polycrystalline diamond abrasive synthesized by a conventional high temperature and high pressure method.

[0023] Specifically, the cleaned polycrystalline diamond abrasive, metal and alloy powder are evenly mixed and put into a metal cup. Metal cups are made of stainless steel, zirconium, niobium, molybdenum or tantalum. After that, pyrophyllite blocks are put into it and then synthesized in a six-sided top press under high temperature and high pressure. ...

Embodiment 1

[0028] A certain particle size of polycrystalline diamond abrasive synthesized by a conventional high temperature and high pressure method is selected as a raw material, and 5.5% of zinc, 3% of copper, and 1.5% of Cu85Al15 are added. After mixing evenly, put it into a molybdenum cup, and then put it into a synthesis block and put it into a six-sided top press for high-temperature and high-pressure synthesis.

[0029] Boost the pressure to the high pressure of the hydraulic system of the press to 100MPa within 50 seconds. After the internal synthetic pressure reaches 6300MPa, keep the pressure for 14 minutes.

[0030] Start heating after boosting the pressure for 80 seconds, the heating temperature is 1350-1450 degrees Celsius, and the heating time is 10 minutes.

Embodiment 2

[0032] The polycrystalline diamond abrasive 60 / 80-400 / 500 mesh mixture synthesized by the conventional high temperature and high pressure method is selected as the raw material, and 2.5% of aluminum, 1% of copper, 2.5% of Cu85Al15, and 4% of Cu60Zn40 are added to the molybdenum cup after mixing evenly.

[0033] It takes 60 seconds to increase the pressure to the high pressure of the hydraulic system of the press to 100MPa. After the internal synthetic pressure reaches 6300MPa, keep the pressure for 12 minutes. After 70 seconds of increasing the pressure, start heating. Heating temperature to 1350-1450 degrees Celsius, heating time 8 minutes.

[0034] According to the synthetic method of embodiment 1, select polycrystalline diamond abrasive of different grain sizes as the TI and TTI / TI performance of the polycrystalline resin diamond abrasive produced by raw material and commercially available single crystal resin diamond abrasive and commercially available polycrystalline res...

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Abstract

The invention relates to the technical field of ultra-hard material synthesis, and provides a preparation method of a polycrystalline resin diamond abrasive. The polycrystalline resin diamond abrasive is prepared by synthesizing polycrystalline diamond abrasive, metal and alloy uniformly mixed powder through a high temperature and high pressure method, wherein the metal and alloy account for 5%-16% of the weight of the mixed powder; and the metal and the alloy do not react with the polycrystalline diamond abrasive at high temperature and high pressure, and the melting point is lower than that of the polycrystalline diamond abrasive. The invention further provides the polycrystalline resin diamond abrasive. The polycrystalline resin diamond abrasive material is high in impact strength and thermal impact strength.

Description

technical field [0001] The invention relates to the technical field of superhard material synthesis, in particular to a polycrystalline resin diamond abrasive and a preparation method thereof. Background technique [0002] Synthetic diamond abrasives are divided into single crystal diamond abrasives and polycrystalline diamond abrasives. Synthetic diamond abrasives are mostly used in resin bonded grinding wheels and other products. In the industry, single crystal or polycrystalline diamond abrasives are generally called single crystal or polycrystalline resin diamond abrasives. [0003] The existing single crystal resin diamond abrasive has high strength, less internal impurities, good thermal stability, and resistance to abrasion and thermal shock. Suitable for powerful grinding, high work efficiency. [0004] However, during the grinding process, the cutting edge of the single crystal resin diamond abrasive crystal is not easy to be locally broken to produce a new cuttin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C1/10C22C26/00B22F3/02C09K3/14
CPCC22C1/05C22C26/00B22F3/02C09K3/1409
Inventor 邹泽宏李海燕崔静芝李长虹
Owner 郑州益奇超硬材料有限公司
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